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matcher: Add a superset matcher

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This matcher always matches only on some relvant things and ignores the
rest. This allows you to match only on name and class, but ignore state
and parents/siblings for example.
This commit is contained in:
Benjamin Otte 2012-03-18 16:13:09 +01:00
parent 5f5bf27287
commit 102d10016f
2 changed files with 138 additions and 0 deletions
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125
gtk/gtkcssmatcher.c
View File

@ -291,3 +291,128 @@ _gtk_css_matcher_any_init (GtkCssMatcher *matcher)
matcher->klass = &GTK_CSS_MATCHER_ANY;
}
/* GTK_CSS_MATCHER_WIDGET_SUPERSET */
static gboolean
gtk_css_matcher_superset_get_parent (GtkCssMatcher *matcher,
const GtkCssMatcher *child)
{
_gtk_css_matcher_any_init (matcher);
return TRUE;
}
static gboolean
gtk_css_matcher_superset_get_previous (GtkCssMatcher *matcher,
const GtkCssMatcher *next)
{
_gtk_css_matcher_any_init (matcher);
return TRUE;
}
static GtkStateFlags
gtk_css_matcher_superset_get_state (const GtkCssMatcher *matcher)
{
/* XXX: This gets tricky when we implement :not() */
if (matcher->superset.relevant & GTK_CSS_CHANGE_STATE)
return _gtk_css_matcher_get_state (matcher->superset.subset);
else
return GTK_STATE_FLAG_ACTIVE | GTK_STATE_FLAG_PRELIGHT | GTK_STATE_FLAG_SELECTED
| GTK_STATE_FLAG_INSENSITIVE | GTK_STATE_FLAG_INCONSISTENT
| GTK_STATE_FLAG_FOCUSED | GTK_STATE_FLAG_BACKDROP;
}
static gboolean
gtk_css_matcher_superset_has_name (const GtkCssMatcher *matcher,
const char *name)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_NAME)
return _gtk_css_matcher_has_name (matcher->superset.subset, name);
else
return TRUE;
}
static gboolean
gtk_css_matcher_superset_has_class (const GtkCssMatcher *matcher,
const char *class_name)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_CLASS)
return _gtk_css_matcher_has_class (matcher->superset.subset, class_name);
else
return TRUE;
}
static gboolean
gtk_css_matcher_superset_has_id (const GtkCssMatcher *matcher,
const char *id)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_NAME)
return _gtk_css_matcher_has_id (matcher->superset.subset, id);
else
return TRUE;
}
static gboolean
gtk_css_matcher_superset_has_regions (const GtkCssMatcher *matcher)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_NAME)
return _gtk_css_matcher_has_regions (matcher->superset.subset);
else
return TRUE;
}
static gboolean
gtk_css_matcher_superset_has_region (const GtkCssMatcher *matcher,
const char *region,
GtkRegionFlags flags)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_NAME)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_POSITION)
return _gtk_css_matcher_has_region (matcher->superset.subset, region, flags);
else
return _gtk_css_matcher_has_region (matcher->superset.subset, region, 0);
}
else
return TRUE;
}
static gboolean
gtk_css_matcher_superset_has_position (const GtkCssMatcher *matcher,
gboolean forward,
int a,
int b)
{
if (matcher->superset.relevant & GTK_CSS_CHANGE_POSITION)
return _gtk_css_matcher_has_position (matcher->superset.subset, forward, a, b);
else
return TRUE;
}
static const GtkCssMatcherClass GTK_CSS_MATCHER_SUPERSET = {
gtk_css_matcher_superset_get_parent,
gtk_css_matcher_superset_get_previous,
gtk_css_matcher_superset_get_state,
gtk_css_matcher_superset_has_name,
gtk_css_matcher_superset_has_class,
gtk_css_matcher_superset_has_id,
gtk_css_matcher_superset_has_regions,
gtk_css_matcher_superset_has_region,
gtk_css_matcher_superset_has_position,
};
void
_gtk_css_matcher_superset_init (GtkCssMatcher *matcher,
const GtkCssMatcher *subset,
GtkCssChange relevant)
{
g_return_if_fail (subset != NULL);
g_return_if_fail ((relevant & ~(GTK_CSS_CHANGE_CLASS | GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_POSITION | GTK_CSS_CHANGE_STATE)) == 0);
matcher->superset.klass = &GTK_CSS_MATCHER_SUPERSET;
matcher->superset.subset = subset;
matcher->superset.relevant = relevant;
}

13
gtk/gtkcssmatcherprivate.h
View File

@ -20,10 +20,12 @@
#include <gtk/gtkenums.h>
#include <gtk/gtktypes.h>
#include "gtk/gtkcsstypesprivate.h"
G_BEGIN_DECLS
typedef union _GtkCssMatcher GtkCssMatcher;
typedef struct _GtkCssMatcherSuperset GtkCssMatcherSuperset;
typedef struct _GtkCssMatcherWidgetPath GtkCssMatcherWidgetPath;
typedef struct _GtkCssMatcherClass GtkCssMatcherClass;
@ -58,15 +60,26 @@ struct _GtkCssMatcherWidgetPath {
guint sibling_index;
};
struct _GtkCssMatcherSuperset {
const GtkCssMatcherClass *klass;
const GtkCssMatcher *subset;
GtkCssChange relevant;
};
union _GtkCssMatcher {
const GtkCssMatcherClass *klass;
GtkCssMatcherWidgetPath path;
GtkCssMatcherSuperset superset;
};
void _gtk_css_matcher_init (GtkCssMatcher *matcher,
const GtkWidgetPath *path,
GtkStateFlags state);
void _gtk_css_matcher_any_init (GtkCssMatcher *matcher);
void _gtk_css_matcher_superset_init (GtkCssMatcher *matcher,
const GtkCssMatcher *subset,
GtkCssChange relevant);
static inline gboolean
_gtk_css_matcher_get_parent (GtkCssMatcher *matcher,